We're dividing 53622239 by 991 
The aim is to understand the frequency of 991 in 53622239.

Advancing to step 1:
If we divide 5 by 991, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 991

Step 2:
If we divide 53 by 991, we get 0 and a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Append the next digit (6) from the dividend to 53 and continue with: 536 / 991

Step 3:
The number 991 fits into 536 0 times, leaving a remainder of 536.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 536 to get 536.
Bring next digit (2) of the dividend behind the 536 and repeat the process: 5362 / 991

Going ahead to step 4:
991 goes into 5362 5 times with a remainder of 407.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 4955 from 5362 to get 407.
Bring next digit (2) of the dividend behind the 407 and repeat the process: 4072 / 991

Going ahead to step 5:
991 goes into 4072 4 times with a remainder of 108.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
If we subtract 3964 from 4072, we get 108.
Append the next digit (2) from the dividend to 108 and continue with: 1082 / 991

Step 6:
1082 divided by 991 is 1 with a remainder of 91.
Write down 1 as next digit of the result. 
Result so far: 541.0
Deduct 991 from 1082 and we're left with 91.
Append the next digit (3) from the dividend to 91 and continue with: 913 / 991

Going ahead to step 7:
The number 991 fits into 913 0 times, leaving a remainder of 913.
Put 0 as the next digit of the answer. 
Result so far: 5410.0
The remainder is 913 after subtracting 0 from 913.
Append the next digit (9) from the dividend to 913 and continue with: 9139 / 991

Let's proceed to step 8:
When dividing 9139 by 991, we get 9 with a remainder of 220.
The number 9 becomes the next digit in our result. 
Result so far: 54109.0
Deduct 8919 from 9139 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 9:
2200 divided by 991 is 2 with a remainder of 218.
Record the quotient 2 as the next digit in the result. 
Result so far: 54109.2
Subtracting 1982 from 2200 leaves us with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

On to step 10:
The number 991 fits into 2180 2 times, leaving a remainder of 198.
Record the quotient 2 as the next digit in the result. 
Result so far: 54109.22
If we subtract 1982 from 2180, we get 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Our division results in 54109.22 with a remaining 0.198.